Pin Blocks | McMaster-Carr

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System of Measurement

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Mounting Location

Printed Circuit Board

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Switching Voltage

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Number of Circuits Controlled

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Switch Designation

Electrical Connection

Width

Voltage

Electrical Phase

Height

Certification

C-UL Recognized Component

CE Marked

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UL Listed

UL Recognized Component

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Horsepower @ Switching Voltage

Number of Terminals per Circuit

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Compliant with Exemptions

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REACH

Compliant

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U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

Relay Type

Operation Type

2,022 Products

Electrical Power, Networking, and Controlling

Terminal Blocks

Create tidy rows of wire connections that you can identify, test, and adjust on the spot

699 products

Distribution Bars

Route electricity within switchboards and battery banks; also known as bus bars

31 products

Distribution Blocks

Distribute electricity from a single power source to several devices in a circuit

47 products

Distribution Posts

Send power from one source to several devices in a circuit in less space than a distribution block

4 products

Relays

Electrically open and close circuits to control power to lights, motors, and other equipment

392 products

Relay Sockets

Quickly mount relays to DIN rail or flat surfaces

26 products

Timer Relays

Turn machinery on or off after receiving an electrical signal that starts the timer

187 products

Interface Relays

Isolate input and output circuits to protect PLCs and other controllers

79 products

Vehicle Relays

Switch high-current loads on vehicles, such as starters, headlights, and fuel pumps

47 products

Latching Relays

Lock into position so they don't require constant voltage to stay switched

27 products

Monitoring Relays

Trip circuits or sound an alarm when voltage, current, or other limits are exceeded

31 products

Infrequent-Cycle Relays

Use with equipment that cycles on and off, such as HVAC systems

147 products

Air-Actuated Relays

Convert an air signal on a pneumatic control system to an electric one

1 product

Safety Relays

Monitor circuits and force machines to a safe stop if the relay detects a fault

64 products

Alternating Relays

Automatically split run time between two devices so one isn't always running

2 products

Proportional-Control Relays

Gradually adjust output instead of turning on or off

12 products

Measuring and Inspecting

Plug Gauges

Verify the diameter or threads of machined holes in finished parts; also called pin gauges

265 products

Load Cell Junction Boxes

Join multiple load cells to combine their weight measurements

2 products